Question: What chemical compound has a significant drug interaction with astemizole starts with the letter t?
Paraphrase: What chemical compound has a sizable drug interaction with astemizole starts with the letter t?
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q11173 . ?sbj wdt:P769 wd:Q423437 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 't')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: terfenadine, terfenadine, thioridazine, thioridazine